问题
读图填空题
在生态系统中， 和 沿着食物链和食物网流动。
答案
物质 能量
题目分析：生态系统中物质和能量是沿着食物链和食物网流动的，生态系统中的能量由生产者通过光合作用把功能转变成储存在有机物中的能量，能量在沿食物链的流动过程中会逐级减少，即生态系统中各种生物的数量是生产者最多，各级消费者的数量会逐级递减。
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在生态系统中， 和 沿着食物链和食物网流动。
物质 能量
题目分析：生态系统中物质和能量是沿着食物链和食物网流动的，生态系统中的能量由生产者通过光合作用把功能转变成储存在有机物中的能量，能量在沿食物链的流动过程中会逐级减少，即生态系统中各种生物的数量是生产者最多，各级消费者的数量会逐级递减。
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| He lost his arms in an accident that caused the death of his father. Then his 1 became his shadow, never leaving him alone for years. 2 writing with his toes, he was completely unable to do anything in his life. As the two brothers grew up together, they had their 3 of problems and they would often quarrel. Then one day, his younger brother decided to 4 separate from him, living his own life as many 5 people do. So he was heart-broken and didn't know what to do. A 6 misfortune happened to a girl, too. One night she tried to 7 meals for her sick mother, only to overturn the kerosene light on the stove, resulting in a fire which took her 8 away. Though her elder sister in another city 9 her willingness to take care of her, she was 10 to learn to be completely independent. At school, she 11 studied hard. One day, the boy and the girl were both invited to 12 on a television interview program and asked to 13 something on a piece of paper with their toes. The boy wrote; My younger brother's arms are my arms; 14 the girl wrote: Broken wings, flying heart. They had both 15 the same pain, but their different attitudes determined the nature of their lives. It is true that life is unpredictable (难以预料). Disasters can strike at 16 time. If you choose only to complain and 17 , it will always follow you 18 you go. But if you decide to be 19 , the hard moment will 20 to be one when new hopes will arise. | ||||
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